Hydrocarbon-burner.



J. G. KURTZ & S. BUCHANAN. HYDROOARBON BURNER. APPLICATIQN FILED NOV.10,1910.

Patented Oct. 10,1911.

2 SHEETS-SHEET 1.

Q3 I N a COLUMBIA PLANOGRAPH c0, WASHINGTON, D. C.

J. O. KURTZ & S. BUCHANAN. HYDROOARBON BURNER.

APPLICATION FILED NOV. 10,1910. I 1,005,561 Patented Oct. 10, 1911.

2 SHEETS-SHEET 2.

UNITED STATE PATENT @FFTQE.

JOHN C. KUETZ AND STANLEY BUCHANAN, 0F DAYTON, OHIO.

HYDROCARBON-BURNER.

To all whom it may concern:

Be it known that we, JOHN G. KURTZ and STANLEY BUCHANAN, citizens of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Hydrocarbon-Burners; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in hydro-carbon burners which are especially adapted to be used in boiler furnaces where a great percentage of heat and consumption of gas is required.

The objects of the invention are several, principally among which is the provision of a burner which enables a more complete and thorough mixture to take place in the burner, thereby insuring a complete combustion and a consequent economical use of the gas.

A further object of the invention is to provide a burner of the above type which permits of the use of coal in the furnace without requiring any alterations to be made therein and in which the burner is protected, and is therefore not subjected to any damage consequent upon the use of coal as a fuel.

A further object of the invention is to provide a burner in two parts, whereby the same may be disconnected for the purpose of replacing that portion of the burner which is subjected to the greater amount of usage and wear in its operation.

Other features of advantage and novelty, all of which tend to increase the efficiency of the burner and decrease the consumption of gas, will appear from the specification and claims and will be set forth in connection with the accompanying drawings, of which,

Figure 1 is a sectional view on the line aa of Fig. 2, the same being through a boiler furnace. Fig. 2 is a longitudinal section on the line e-e of Fig. 1. Fig. 3 is a sectional view of one of the burners and its setting on the line b-7) of Fig. 2. Fig. 4 is a side elevation of two individual burners showing their relative positions in the assemblage or manifold arrangement. Fig. 5 is a sectional view on the line cc of Fig. 4.

Specification of Letters Patent.

Application filed November 10, 1910.

Patented Oct. 10, 1911.

Serial No. 591,586.

Fig. 6 is a sectional view on the line d-d of Fig. 4.

Throughout the specification and the ac companying drawings, similar reference characters indicate corresponding parts.

Referring more particularly to the illustrations of the invention, 1 designates a boiler mounted within a set-ting 2. Within the setting 2 is an arch or fire wall 3 which, in connection with the front wall of the setting, forms a furnace consisting of an ash pit 4, combustion chamber 5 with intermediate grate bars 6. The grate bars 6 are of any well known-type, and it will be seen from the drawings that the top of said grate bars, in the present furnace, are unobstructed, which allows coal to be used freely in cases where it should become necessary, such for example, when the supply of gas diminishes. In order to provide this unobstructed use of coal, and to so arrange or set the assemblage of burners that their efficiency and permanency will not be jeopardized, the burners are placed or assembled on the sides of the fire box without intruding upon the area of the fire chamber.

Referring to the individual construction I and characteristics of the burner, and leaving for the moment the method of their setting, 7 designates the lower section of said burner which is of a tapered form and of a gradually decreasing throat upwardly. The lower or larger end of said portion is provided with a yoke 8, which supports two pipes 9 and 10 the former of which is a gas pipe and the latter of which is an air or steam pipe. It will be noted that the gas pipe 9 extends into the burner a greater distance than does the pipe 10, and that the jet of gas emitted from the gas pipe is substantially parallel with the longitudinal axis of the burner, and that the pipe 10 is on an a manifold pipe 12 which in the present instance supplies steam which forms a blast owing to the pressure under which the steam is injected. It will be observed that the pipe 10 is contracted at its outlet end to form a jet, and the said pipe being on the angle before referred to, the said jet is directed toward the jet issuing from the gas pipe. The inrush of steam also has the eflect of drawing into the burner a quantity of air, which supports the combustion of the gas, and owing to the fact that the lower section 7 of the burner is contracted at its upper end, the mixture formed therein is compressed to an extent which thoroughly unites the gas and air in one homogeneous mass. The heat of the steam is also communicated to the mixture which insures its being burned at a higher temperature.

Mounted on the upper end of the lower member 7, which may properly be termed the mixing section of the burner, is the upper or burner section 11 which is suitably curved to direct the flame horizontally into the furnace. The burner section 11 is detachably supported on the upper end of the mixing section 7 by means of a flange 1.2 on

said upper section, which telescopes over the upper end of said section 7.

The manner of constructing the burner as a whole, allows the position of the jet end to be adjusted on its vertical axis before inclosed by the brick work, thereby allowing the flame to be directed to the front or to the rear, or in any other direction it may be necessary. The upper section of the burner may also be removed and replaced with a new portion without requiring the body por tion or mixing section 7 to be discarded, and it will thus be seen that the cost of maintaining said burner is materially minimized. As substantially all the wear is imposed upon the outlet or jet end of the burner, it naturally follows that these portions will in time become impaired or ineflicient, owing to burning out, and to thus require their removal. To preserve the main body of the burner under such conditions as an item of no small importance, and to this end the burner is made in the two sections before referred to.

The jet or upper section 11 of the burner is provided with an inwardly extended flange 13, which reduces the jet opening to a tonsiderably smaller diameter than that of the burner proper. By this construction a portion of the mixture is baflied before discharging through the jet opening, the re sult of which is to enable more or less compression of the mixture at the point of its exit. It will be understood that it is important to thoroughly impregnate the gas with the other material, such as air and steam, throughout the entire area of the burner in order to produce a perfect combustion, which is always evidenced by the character of the flame which partakes of a bluish purple hue.

As will be observed from the drawings, a

bank or battery of these burners, as above described, is located on each side of the furnace between the grate bars 6 and the side walls of the setting. The settings of the burners are such as to allow the circular flanges 12 of the upper sections 11 to rest against the fire-brick on each side thereof,

the intermediate spaces being filled with fire clay, so that there can be no escape of the fuel from the burner at the joints where the two sections are united. The manner of setting the burners provides each burner with an individual heating space or chamber 14-, which surrounds the upper section of the burner, said upper section being subjected to the same heat as that generated in the furnace. The mixture when passing through the upper section of the burner, will be heated to a high degree; this insures an immediate bursting into flame when issuing in a jet. The upper sections 11 are supported from the grate bars 6 by fire-brick 15, which cooperate in contributing the chamber 14: before referred to. It is desirable that a thick layer of fire clay 16 shall be interposed under the lower course of brick 15, owing to the fact that the joints between the lower sections 7 and the upper sections 11 of the burners occur at this point. The fire clay 16 serves as a seal at such point to prevent the burner drawing in. the hot gases from the ash-pit. The upper section 11 of the burner is provided with a web 17 which allows a layer of fire-brick to be placed above the assembled burners and which also contributes to the formation of the heat cham ber 14 before referred to. This layer of firebrick 18 also protects the burners. When the furnace is burning gas as a fuel, a layer of ashes 19 is placed on the grate bars to seal the chamber above the grate bars from cool air below. If at any time the pressure of the gas should become too low to meet the demand in the boiler, the ashes 19 may be removed and coal applied. This may be done without disturbing the burners or changing the furnace in any manner what ever.

The mixture is heated in the burners to substantially the temperature of the furnace and the combustible character thereof is raised to such a degree that it bursts forth at the outlets in a flame of intense heat. All the cold air, it will be observed, is excluded from the combustion chamber or the space above the grate bars and thus the seams of the boiler are protected in the case of the type of boilers known as return tubular boilers. Also in the case of water tube boilers the seams between the heads and the tubes are protected from the results of cold air entering the combustion chamber.

We claim:

A sectional gas burner, adapted to be i11- closed in a brick setting, said burner consisting of a base section having a longitudinal bore which tapers upwardly and inwardly from the bottom of said section, and a pipe support on the lower end of said base section, pipes mounted in said support, and a delivery section the lower end of which is increased in diameter to provide a flange which telescopes on the upper end of the base section and provides a bore of equal diameter with the bore of the adjacent end of the base section, whereby the mixture passes freely from the base section to the delivery section of the burner through a uniform passage, said delivery section extending at its upper end substantially at a right angle to the base section and adapted to be adjusted to a proper position before setting said burner, substantially as shown and described.

In testimony whereof we affix our signatures, in presence of two witnesses.

JOHN C. KURTZ. STANLEY BUCHANAN. Witnesses:

R. J. MOGARTY, HOWARD S. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

